Below are some links to help you
explore some more low carb options. I realize that you are pretty
limited when you go out to bar as opposed to what you can make
at home. Bars tend to only have water, soda water, and diet
coke as a sugar free mixer. With that, you can order any of
the liquors above with the water, soda water or diet coke for
a ZERO carb cocktail. I find that a lot of people order
vanilla vodka and diet coke a lot. The flavored alcohols can help
in adding a lot of flavor. Also, keep in mind that a glass of
white wine has less than 2 grams of carbs. Red wine has 3 grams.
If you really want to get all fancy at home then
you can order something from NaturesFlavors.com.
They have all kinds of sugar free (splenda) syrups to replace
liqueurs you might crave. I have also used splenda (buy it in
the bulk box-not the packets) and mixed it with water and extracts
from the spice section of your local store.
Low Carb Cocktail Books